Expanded porphyrins as third order non-linear optical materials: Some structure-function correlations |
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Authors: | Sabapathi Gokulnath and Tavarekere K. Chandrashekar |
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Affiliation: | (1) Department of Chemistry, Indian Institute of Technology, Kanpur, 208 016, India;(2) Present address: National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, 695 019, India |
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Abstract: | In this paper, the non-linear optical properties of representative core-modified expanded porphyrins have been investigated with an emphasis on the structure-property relationship between the aromaticity and conformational behaviour. It has been shown that the measured two-photon absorption cross section (σ 2) values depend on the structure of macrocycle, its aromaticity and the number of π-electrons in conjugation. |
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Keywords: | Expanded porphyrins conjugation aromaticity conformation TPA cross section |
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